Radiator for motor-vehicles



P. F. SPEHY.

RADIATOR FOR MOTOR VEHICLES.

APPLICATION FILED MAY l5, I918H Patented Apr. 6, 1920.

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PATENT OFFICE.

PHILMORE F. SPERY, OF CHICAGO, ILLINOIS.

RADIATOR FOR MOTOR-VEHICLES.'

Specification of Letters Patent.

Patented Apr. 6, 1920.

Application led May 15, 1918. Serial No. 234,649.

To all whom z't may concern:

Be it known that I, PHILMORE SPERY, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Radiators for Motor-Vehicles; and I do hereby declare that the following description of my said invention,'taken in connection with the accompanying sheet of drawing, forms a full, clear, and exact specification, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates generally to improvements in radiators for motor vehicles, and it consists, essentially, in the novel and peculiar combination of parts and details of construction, as hereinafter first fully set forth and described and then pointed out in thev claims.

The object of this invention is the production of an eilicient, and serviceable radiator for reducing the temperature of the cooling water employed in internal combustion engines after the water has passed through the water spaces in the cylinders and is conducted to the radiator, and after having passed through the cooling passages in the radiator is returned at a reduced temperature to the engine cylinders. The cooling of the water while passing' through the water tubes is effected by currents of air passing through the spaces between the water tubes, and one of the objects of my invention is to increase the effectiveness of the cooling inuences of the air by locating in the air spaces delectors, which direct the inrushing air toward theA walls of the water tubes.

Other objects of my invention will hereinafter fully appear and attention will be directed thereto.

To accomplish these objects, I construct this radiator, in the preferred embodiment of my invention, as illustrated in the drawings forming a part of this specification, and in which Figure 1 represents a front elevation of a radiator of the cellular type in which details of construction are, however, omitted. Fig. 2 is a transverse sectional elevation on line 2-2 of Fig. 1. Fig. 3 is an elevation of a fragment of the cooling element' and Fig. 4 is an edge view of the same. Fig. 5 is a sectional elevation on line 5-5 of Fig. 8. Fig. 6 is a front elevation of a series of water tubes,the tube shown at the left of this figure being in section. Fig.

7 is a sectional plan of a fragment of a water tube and one of the cooling elements in position. Fig. 8 is a plan of a portion of the radiator core partly in section, the sectional part being on line 8 8 of Fig. 5. Fig. 9 is a plan view of a strip of metal from which a deflector is formed; Fig. 10 is an end view of the same after having been bent to proper form. y

Fig. 11 is a plan of a strip of metal adapted for formation into a multiplicity of connected deflectors. Fig. 12 is an end view of the same after having been properly shaped or folded.

Fig. 13 is a plan of a strip of metal from which the heat conductor or cooling element is formed.

Like parts are designated by the same characters and symbols of reference in all the various figures.

A, in the drawings designates a casing of any suitable design, the one illustrated being of a conventional, and well-known configuration. This casing has in its front and rear walls large openings 12, 13. in which the radiator core B, is secured. This core is of less height than.v the height of the casing to leave therein an upper water chamber C, and a lower water chamber D, having inlet and outlet tubes 14, 15,` respectively, which connect with the engine or motor in the well-known manner. This core B comprises a series of spaced-apart, vertically disposed, water tubes E, which may be of any approveddesign, those shown being of specific construction forming the subject matter of a copending application for Letters Patent, being Serial No. 233,844 filed May 11, 1918,'and to which reference may be had for a full disclosure of this part of my invention. For the purpose of this present application it may be sufficient to state that a single water tube consists of two plates 18, 19, said plates having connected corrugations 20, of approximately semicircular contour, whereby crotches 21, are formed at the jointure of the corrugations, the object of which will hereinafter appear.

In the spaces F, between adjacent water tubes E. there are located metallic elements G, which I shall term cooling elements for the reason that they assist the metallic walls of the water: tubes in reducing the temperature of the water passing therethrough.

These cooling elements consist of strips of metal illustrated in detail in Figs. 3, 4, and

13, each of which strips consists of a narrow ribbon of thin sheet metal, one longitudinal margin of which is notched by coacting pairs of notches 40, Fig. 13. This strip is then bent upon itself through 'the first notch, as indicated by the dotted line 41, and then rebent upon itself through the second notch 40, of an associated pair of notches. It is then bent at right angles along the dotted line 42, and relient at right angles along the dotted line 44, whereby the portion between the dotted lines 42 and 44 form a part of the vertical bar 16, while the portion between the associated pairs of notches 40, and the portions between the dotted lines 41 and 42, and 44 and 41, form the cross bar 17, 17, the cross bar being` formed of two thicknesses of the metal while the vertical portion is of but one thickness. This doubling up, and bendingv and rebending is repeated as often as necessary to form the complete cooling element G; and it may here be noted that this work can be done very expeditiously and accurately by suitable forming rolls and bending dies.

By notching the strip as described, there is formed on the cross bars a wide portion 17, and a narrower portion 17 a, the former portion occupying the space at the longitudinal margins of opposing wa'ter tubes, and the narrower portion engaging the notches 21 between the corrugations 20 of these tubes.

The terminals of the cross bars 17, 17 a are in intimate contact with the walls of lthe water tubes, whereby the cooling effect of the air on said cross bars is communicated to the walls of the water tubes, and their efficiency thereby auginented. The object of forming these cooling elements G of a single strip of metal bent as described, is primarily cheapness of production, and then to make these stri slightly resilient so that they can be forced into the air spaces and retain their position therein by frictional contact,

until the cooling elements are permanently connected to the water tubes in a bath of molten solder as will hereinafter appear, the cross bars 18 engaging the crotches 21, and are thereby properly spaced and prevented from being disturbed in their position for the time being.

In order to increase the cooling effect =of the air passing through the air spaces, I locate in these spaces delectors H, which direct the airentering the air spaces toward the walls of the. water tubes. These deflectors may be of any approved design, but in the preferred embodiment of my invention consist of a strip of metal formed V-shape in transverse section, whereby the members or wings 22 thereof direct the passing air toward the walls of the water tubes, the apex 23, of these deflectors being pointed toward the entrance end of the air spaces F. These detiector strips are vertically disposed and extend the entire height of the radiator core; and they are placed into the air passages directly behind the cooling elements G, that are located at the front of the radiator core, where the cooling air enters the core, and thus cause the deflection of the air from its natural course and to impinge upon the walls of the water tubes. Ordinarily one such deflector H, as shown at 30 in Fig. 8, may be suiicient to produce'the desired result, but in some cases, especially in the larger radiators employed in motor trucks, traction engines, and the like wherein powerful engines are employed, I employ a multiplicity of these deflectors, one behind the other, as illustrated at 31 in Fig. 8, and if I lind it convenient, I shall form this series of deflectors of a single strip of metal bent as shown in Fig. 11, whereby a multiplicity of angularly disposed deflecting surfaces 22 follow each other more or less closely.

In the preferred embodiment of my invention the water tubes E are connected to top and bottom plates I, J, in which there are spaced-apart, slotted apertures through which the ends of the tubes are passed and clenched on the outer surfaces of the plates; and in order to properly secure the deflectors H in position between adjacent water tubes, I form on the ends of the deflector strips lugs 24, and in the plates I J slot holes 25, the lugs 24 being passed through the slot holeos 25 and then clenched as` at 26 in Figs. 5, 6, and 8. ""A core as assembled in the manner described, is placed into a clamp or holder resembling a printers chase, and having movable means for securely holding the core therein., This core is then dipped with one flank into an acid bath to receive the required flux, and then into a bath of molten solder. It is then reversed and the other Hank of the core treated ina like manner, after which the top and bottom of the core are subjected to the same treatment whereby when the molten solder entering the seams and joints has cooled and solidified, the various parts are so firmly united as to form a homogeneous and integral structure which is .finally soldered into the casing at the openings therein.

As shown, the units of Water tubes have flat, thin, vertical edges and the corrugations therein start at some distance from these marginal edges. It follows that if the cross bars are to be in intimate contact with the walls of the water tubes, the outer portion of these cross bars must fit the Water tubes at the at marginal edges, and the remaining part fit into the crotches of the corrugations. For this reason the cross bars have the offset portion 17a that afford shoulders 43 which bear against the offset part of the water tubes. By these shoulders the terially facilitates the assembling of the4 parts which thereby require but scant attention by a workman to properly locate the parts.

I have hereinbefore described with considerable minuteness the preferred embodiment of my invention, but I am aware that changes in the details thereof, may be made,

and parts omitted without departing from the scope of my invention as dened in the subjoined claims.

Having thus fully described this invention, I claim as new, and desire to secure to myself by Letters Patent of the United States- 1. A radiator of the nature described, comprising, in combination, a casing, a series of spaced apart Vertical water tubes in said casing, and cooling elements between adjacent water tubes, said cooling elements consisting each of a strip of metal, said strip having a series of associated pairs of notches in one of its longitudinal margins, the distance between the notches comprising the pair of associated notches being less than the distance between the pairs of notches,

said strip being bent back and forth through said notches to afford spaced apart cross bars, and bent and rebent at right angles between associated pairs of notches to adord vertical bars, the ends of said cross bars being reduced in width by said notches to afford contact with the walls of said water tubes, the wider part of said cross bars f1tting between and engaging the Vertical Inargins of the water tubes.

2. In a radiator of the nature described, the combination, of a series of spaced apart vertically disposed water tubes, the walls of which are transversely corrugated to afford crotchcs between the corrugations and fiat portions at the longitudinal margins, a cooling element between adjacent water tubes, said cooling element comprising a narrow strip of metal, said strip having in one of its longitudinal margins inwardly extending pairs of notches, said strip being bent upon itself through said notches, and bent and rebent at -right angles between associated pairs of notches, wherebythe doubled up portions afford cross bars and the right angularly bent portions form vertical connecting bars, said cross bars having main portions engaging the fiat marginal portions of the water tubes, and the reduced portions engaging the crotches between the corrugations of said water tubes.

In testimony that I claim the foregolng as my invention I have hereunto set my hand.

PHILMORE F. SPERY. 

